mathjs/es/function/unit/to.js

Math.js is an extensive math library for JavaScript and Node.js. It features a flexible expression parser with support for symbolic computation, comes with a large set of built-in functions and constants, and offers an integrated solution to work with dif

import { factory } from '../../utils/factory';
import { createAlgorithm13 } from '../../type/matrix/utils/algorithm13';
import { createAlgorithm14 } from '../../type/matrix/utils/algorithm14';
var name = 'to';
var dependencies = ['typed', 'matrix'];
export var createTo =
/* #__PURE__ */
factory(name, dependencies, function (_ref) {
  var typed = _ref.typed,
      matrix = _ref.matrix;
  var algorithm13 = createAlgorithm13({
    typed: typed
  });
  var algorithm14 = createAlgorithm14({
    typed: typed
  });
  /**
   * Change the unit of a value.
   *
   * For matrices, the function is evaluated element wise.
   *
   * Syntax:
   *
   *    math.to(x, unit)
   *
   * Examples:
   *
   *    math.to(math.unit('2 inch'), 'cm')                   // returns Unit 5.08 cm
   *    math.to(math.unit('2 inch'), math.unit(null, 'cm'))  // returns Unit 5.08 cm
   *    math.to(math.unit(16, 'bytes'), 'bits')              // returns Unit 128 bits
   *
   * See also:
   *
   *    unit
   *
   * @param {Unit | Array | Matrix} x     The unit to be converted.
   * @param {Unit | Array | Matrix} unit  New unit. Can be a string like "cm"
   *                                      or a unit without value.
   * @return {Unit | Array | Matrix} value with changed, fixed unit.
   */

  var to = typed(name, {
    'Unit, Unit | string': function UnitUnitString(x, unit) {
      return x.to(unit);
    },
    'Matrix, Matrix': function MatrixMatrix(x, y) {
      // SparseMatrix does not support Units
      return algorithm13(x, y, to);
    },
    'Array, Array': function ArrayArray(x, y) {
      // use matrix implementation
      return to(matrix(x), matrix(y)).valueOf();
    },
    'Array, Matrix': function ArrayMatrix(x, y) {
      // use matrix implementation
      return to(matrix(x), y);
    },
    'Matrix, Array': function MatrixArray(x, y) {
      // use matrix implementation
      return to(x, matrix(y));
    },
    'Matrix, any': function MatrixAny(x, y) {
      // SparseMatrix does not support Units
      return algorithm14(x, y, to, false);
    },
    'any, Matrix': function anyMatrix(x, y) {
      // SparseMatrix does not support Units
      return algorithm14(y, x, to, true);
    },
    'Array, any': function ArrayAny(x, y) {
      // use matrix implementation
      return algorithm14(matrix(x), y, to, false).valueOf();
    },
    'any, Array': function anyArray(x, y) {
      // use matrix implementation
      return algorithm14(matrix(y), x, to, true).valueOf();
    }
  });
  return to;
});